MY cactus is in a VERY small pot

As long as it has a drainage hole and 1" soil around the sides it's okay, it would grow taller and larger if it was in a larger pot, but that not much larger. Change when the weather settles in the spring depending where you live. Give it new fresh soil then.

Norma:: Thanks for your comments. I have learned lots from you here at GW.
Chicagardens :: This is a SAKE cup from an Asian kitchen supply store. Lots of tea cups are also suitable. Asian ones do not have a handle. Also try thrift stores, garage sales, dollar stores, etc.... From your name , I would guess you are in Chicago ??? I was born there MANY years ago. My parents grew hardy succulents in our back yard.......WOW did it get cold.
Pennyhal:: I did not notice the top hat till you pointed it out....thanks.

CG :::: Thanks for all the EIGHTS......a very lucky number among Asians here in the San Francisco bay area.....It will bring good fortune. I am not Asian , but I like to use the 8s just in case,,,,,,,,,,,,,,,,,,,,,,,,,,,,